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GEOGRAPHICAL VARIATION OF DIAPAUSE TERMINATION IN THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), IN SOUTHWESTERN ONTARIO

Published online by Cambridge University Press:  31 May 2012

D. G. R. McLeod
D. G. R. McLeod
Affiliation:
Research Institute, Agriculture Canada, London, Ontario
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Abstract

The European corn borer, Ostrinia nubilalis (Hübner), has two distinct geographical populations in southwestern Ontario. The time required for diapause termination is the main distinguishing feature. This together with different critical photoperiods for diapause induction explains the occurrence of two complete generations in the southern portion and only one in the northern portion of this region.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 12 , December 1976 , pp. 1403 - 1408
Copyright
Copyright © Entomological Society of Canada 1976

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